Not everyone wants the rules of the system up for a vote every 12 months. I know that's controversial.
I agree that consensus changes can be breaking & with time they should become less frequent & severe until finally ossification. No crypto is ossofied yet. More work is needed.
Not to mention BSV: As recent as a couple of months ago hardforked in a rather radical feature - coin confiscation w.o. private keys. Absolute garbage scam!